I only have bought two safehouses in this game, that's because I didn't get it too long ago.

BOABO: Blue and White Burrito

Starter Safehouse: FIB Rancher

I also tried to save a helicopter in the garage but the game crashed. You don't always need Action Replay to obtain a helicopter, if you have CYCLODS you can update it to the newer version which has more cheats. CYCLODS uses Action Replay codes so you don't need Action Replay.

I currently only had one now at Playboy X's loft I think which is an Enforcer (bad choice, I know). Previously in Bohan and in Algonquin I had a maroon Vigero, but I somehow lost it. I'm thinking of replacing the Enforcer with a Feltzer maybe. In Alderney I might get another Vigero; in Alognquin, I might have a Banshee if I can find one; and in Bohan, I might get whatever sweet ride I see first.